Lock



July 13, 194s.

Tiff

WMM

ATTORNEY Patented Jul-y 13,n 1948 LOCK Charles Ledin, Stamford, Conn., assignor to The Yale & Towne Manufacturing Company, Stamford, Conn., a corporation of Connecticut Y f Application October 30, 1945, Serial No. 625,608`- This invention relates to a lock. and more particularly, a lock of the type adapted for push and pull action, with suitable control mechanism for preventing release of .the lock through said push and pull action. Even more particularly, the invention relates to a type of lock especially adapted for application to the `doors of bathrooms.

As a feature of the invention, the lock utilizes a latchbolt that is adapted to be cammed rear- 'j wardly upon swinging movement of the lock and latchbolt with the door relatively to a strike, the swinging movement being eilected by push and 10 Claims. (Cl. 292-33) pull action. This push and pull action is prefer- .l

ably obtained by the utilization of knobs applied relatively to the inside and outside of the lock.

provides a deadbolt that is cooperable with the strike for preventing movement of the lock relatively tothe strike by push and pull action, the deadbolt being movable into locking position vby one of the knobs that is-used to impart push and pull action. As still a further feature of the invention, the deadbolt is adapted for retraction by the latchbolt in the event the deadbolt is projected when the door is open and the door is then shut.

The nature of my invention will be more clearly apparent upon a study 'of the drawings and the full description thereof in the speciilcation that follows. It is important that my invention be not limited to the mechanical means that I have devised for contributing the features of the invention, as those skilled'ln the art will readily understand how the invention may be embodied in other mechanical forms.

Referring now to the drawings, Fig. 1 is a horizontal section taken through my lock and the strike with which it coacts, along the lines I--I of Fig. 2. Fig. 2'is a section taken along lines 2-2 of'Fig. 1. Fig. 3 is a section taken along lines 3-3 of Fig. 2, the relation of the projected deadbolt to the latchbolt and the strike when the door is closing, being illustrated in dotted lines. Fig. 4 is a section along lines 4-4 of Fig. 2. Fig. 5 is a vertical view of the strike of my invention.

Referring now more particularly to the drawings, reference numeral IB indicates a door to which my lock may be applied, while reference numeral I'I indicates a door jamb on which is mounted the strike I2 best Shownin Fig. 5. The door IU is formed with an opening I3 within which is mounted the casing I4 of my lock. This casing is preferably formed of two parts I5 and I6, as best shown in Fig. 4, held together by suitable means to form thecasing.

. l5 As a further feature of the invention, the lock Slidably mounted within the casing I4 isa latchbolt I1 whose head I8 isbored for a pin I9 on which is mounted a roller 20. A spring 2| lies at one end within a bore 22 of the latchbolt I1, and presses at its other end against a lug 23 extending from thev casing I4. Naturally,` the spring 2| acts to project the latchbolt I1 relatively to the casing I4 and towardthe strike I2.

The strike I`2 is formed' withA c'am lugs-:24 between which lies the bolt head I8 with its roller 20' bearing against the said cam lugs 24. It 'is obvious that a push or pull on the door I0 will swing casing' I4 and :effect a retraction of the latchbolt I1 due to the camming eiect of the cam lugs` 24 against the roller 20. Such push or pull action is contributed'by` an outside knob 25 and an inside knob 26. The outside knob is held in place by a rosev 21 secured to the door by screws 28. The inside-knob 26 is held in position by a rose 29 secured in place by screws 30. 'I'here `is secured to the inside knob 26, through screw 3I; a spindle 32 that extends into the lock casing I4 as is best apparent from Figs. 1 and 2.

Mounted within the lock casing I4 is a deadbolt 33 formed with rack portions 34. These rack portions are adapted for coaction` with the teeth of a pinion 35 that is formed for traversal of the spindle 32. It is obvious, ofcourse, that the spindle 32 will rotate the pinion 35 so that its teeth will mesh with the teeth of racks 34 to project or retract the deadbolt 33.

The deadbolt 33 is'mounted with its head. 36 lying juxtaposed to the head I8 of the latchbolt I1. Upon rotation of the spindle 32, the head 36 of the deadbolt 33 may be thrown into the opening 3l of the strike l2 so as to lock the casing I4 and the door I0 against movement through push and pull action of the knobs 25, 26. It will be noted that such locking takes place upon rotation of oneof the knobs that is adapted to contribute push and pull action. Thus, any one contacting the knob 26 may open the door by pulling on -the said knob, or he may rotate the knob to move the deadbolt 33 with its Yhead 36 into the strikeV opening3l. To open the door thereafter, the operator will rotate the knob 26 to retract the deadbolt 33 and will then apply pull action.

It sometimes happens that the deadbolt 33 is projected relatively to the casing to its position of Fig. 3, or its dottedline position of Fig'. 2, when the door is open. In thatV event, the slamming shut of the door might lead to damage to the door and the lock mechanism unless means are provided for retracting the deadbolt. For contributing such action, I roundlone portion of the It will be appreciated also that when the deadif bolt is projected', its shoulder 33a lies against the surface I8a of the head I8 of the latchbolt I'I4 as seen in dotted lines in Fig. 2. Thereforefthe" 1i consequent retraction of the latchbolt through contact of ring with the lip 39 of'the strike;`

will cause a retraction also `of the` ,deadboltl 33.;` It is therefore quite apparent that when ,the deadbolt is projected and the door is open, the swing-V ing shut of the door will not damage any of the parts because the :latchbolt willeffect the retraction rofthe deadbolt. However, with ythe `deadboltprojected as in Fig. 3 into the opening 3l of the strike, a pushor pull movement `oi the door Willinot be effective toretract the deadbolt because the deadbolt will impinge against the surfaces of the strike defining -theropening 31, alias will be quite apparent.

A lock -of the particular class is especially adapted for use on bathrooms. Thus, anyone wishing privacy `need merely rotate the inside knob 26 to lock the door. Thereafter, to leave the bathroom-the knob 26 is rotated torretract lthe deadbolt `33, whereupon ya pull action will open thedoor. i, i' r In the event that the bathroom is locked from the'inside andthe occupant becomes ill,'it is important to have aniemergericyrelease mechanism. This I` provide in my lock. Thus, the deadbolt 33 is formed with a further rack portion 45 that is adapted for coaction with aipinion` 46 rotatably mounted within the casing I4 as best illustrated in Fig. 4. GlancingatrFig. 4, it will be4 seen that the `pinion 46 has a stub shaft` 4'1v mounted in a bore 48 ofthe part 'I6 ofI the casing III.- At the other lside of the pinion 46 there extends -a stub shaft 49 .rotatable in casing party I5 andvgrooved at `5I) so thatit may be actuated by a screwdriver. An eyelet 5I is applied to the door I 0 in alignment with the slot.5|1 of the stub shaft 49 so that any tool or other device viitting Awitl'iin'thegslot 59 maybe used to rotatethe pinion. and. retract the deadbolt 33.1 It is quite apparent that through the means indicatedl am able -to provide-emergency release of the deadbolt when necessary. I believe that my invention willnow be `fully apparent to those skilled in the art.

eInow claim: .1. In a lock of the lclass described, a casing, a latch bolt mountedfor sliding movement in .said casing, a spring `pressing said latch bolt Voutwardly of said casing toward latching position, a strike with which said latch bolt co-aicts yieldingly when spring projected from said casing, said strike and Vrlatch bolt being vformed so that transverse swinging of said latch bolt relatively to said strike as when said lock is on aswinging door will cam said latch bolt into said casing against the force of said spring,A a dead bolt Aslidably mounted in said ,casing and juxtaposedrelatively to said latch bolt,` said strike having an opening` into which :said` dead bolt` is` movable when projected, a knob spindle rotatable in said casing, a knob on said SpindIeadapted to rotate said spindle, said spindle and knob being` adapted for securing against endwise movement relatively to said lock casing, and means rotatable with said spindle and engaging a part of said dead bolt for projecting and retracting said dead bolt relatively to said casing and into and out of locking relation to said strike, while a push or pull movement on said knob and spindle is adapted to swing saidjpasing relativelytosaid strike to cam said latch bolt intoor out of ylatching relation to said strike.

2. In a lock of the class described, a casing, a llatch bolt mounted for sliding movement in said casing, a spring pressing said latch bolt outwardly of said lcasing towardflatching position, said latch bolt'coacting yieldingly with a portion of a strike when: 'spring v'projected from said casing, said flaigh boltbeingvormed for coaction with the strike so that transverse swinging of said latch bolt relatively to said strike as when said lock is on a swinging door will cam said latch bolt out of'latching Vposition and into said :casing against the force` of saidspring, a deadbolt Vslidably mounted in said casing and adapted to linterlock with said strike when projected, a knob spindle rotatablein `said casing; fmeans :rotatable with said knob spindle anciengaging a part of said deadbolt forprojecting. and retracting said deadbolt relatively to said' casingand, intov and out oi loekingrelation to said strike, a push orpull movement on said knobespindle r being adapted to swingsaid casing relatively to said strike to Ycam saidl latchbolt into ori-out of .latching lrelation to said strike, a `portion of said vlatchbolt extending ,beyondisaid 'deadbolt ,wheniboth said latchbolt 'and deadbolt are` fully `projected vrelatively to said casing and said casing swings with a door from ran open toward a 'closed position whereby saidv latchbolt impingesV irst against the strike, and means whereby the consequent retraction of said 'latchboltby said strike `retracts said deadbolt into said: casing. Y

3. Ina lockoftheclass described, a casing, a latchboltxmounted'for sliding movement in! said casing, a springfpressing said latchbolt outwardly of saidcasing. towardlatching position,. said latchbolt coacting yieldingly with a portionof a strike when spring/projected from said casing, said latchboltbeing formedfor coaction with the 4strike so that transverse swinging .of saidlatchbolt relatively-togsaid strike `as when said lock is on a swinging'door 4will cam said latchbolt out of latching position and intojsaid icasing against the force of said-spring, ,a deadbolt slidably Y mounted in' saidV casing vand juxtaposed relatively to said latchbolt, said strike having an opening into which said deadbolt 'is movable when projected, ,a knobfspindle rotatable in `said casing, a pinionV mountedin' said :casing and' rotatable with said spindle, Yarack formed ias a part of said vdeadbolt andxcooperablefwith said 'pinion for projeetingjand retracting said deadbolt relativelytosaid casing uponi rotation of 'said Vknob and spindle, a push` vor;pullr''movement of said knob and spindle 'beingadaptedito swing said latchbolt land 'casingrelatively'to said strike, a portion vof said latchbolt extending; beyond said deadbolt `when both said ,latchboltl and 'deadbolt are fullyprojected :rela-tively tov saidcasing and saidcasing. swingsl with a door' from' an open toward a closedpositionvvhereby said latchbolt impinges rst against ,the strike, and means whereby the consequent retraction of said `latch-- boltby said,v strike retracts Ysaid deadbolt into saideasing. ,Y A

4. In a lock of the classfdescribed-a r`casing, `a

latchbolt mounted for sliding movement in said bolt relatively to said strike' as'when said lock is on a swinging door willcam s'aid latchbolt out of latching' position and into'saidcasing against the force of said spring,A a deadbolt slidably mounted in said casing, said strike having a portion with which said deadbolt is cooperable. 'when projected,"a portion of said latchbolt extending beyond said deadbolt when both said latchbolt and deadbolt are fully projected relatively to said casing and said casing swings with a door from an open toward a closed position, whereby said latchbolt impinges first against the strike, and means whereby the consequent retraction of said latchbolt by said strike retracts said deadbolt into said casing.

5. In a lock of the class described, a casing, a latchbolt mounted for sliding movement in said casing, a spring pressing said latchbolt outwardly of said casing toward latching position, a strike with which said latchbolt coacts yieldingly when spring projected from said casing, said strike and latchbolt being formed so that transverse swinging of said latchbolt relatively to said strike as when said lock is Ion a swinging door will cam said latchbolt into said casing against the force of said spring, a deadbolt slidably mounted in said casing `r and juxtaposed relatively to said latchbolt, said strike having an opening into which said deadbolt is movable when projected, a knob spindle rotatable in said casing, a knob on said spindle adapted to rotate said spindle, said spindle and knob being adapted for securing against endwise movement relatively to said lock casing, a pinion mounted in sai-d casing and rotatable with said spindle, a -rack formed as a part of said deadbolt and cooperable with said pinion for projecting and retracting said deadbolt relativelyl to said casing upon rotation of said knob and spindle, a

push or pull movement of said knob and spindle being adapted to swing said latchbolt and casing relatively to said strike, a second rack formed on, said deadbolt, and a second pinion rotatable in said casing for retracting said deadbolt and adapted for access from that side of the lock opposite the side on which said knob is available.

6. In a lock of the class described, a casing, a latchbolt mounted for sliding movement in said casing, a spring pressing said latchbolt outwardly of Asaid casing toward latching position, said latchbolt coacting yieldingly with a portion of a strike when spring projected from said casing, said latchbolt being formed for coaction with the strike so that transverse swinging of said latchbolt relatively to said strike as when said lock is on a swinging door will cam said latchbolt out of latching position and into said casing against the force of said spring, a deadbolt slidably mounted in said casing and adapted to interlock with said strike when projected, a knob spindle rotatable in said casing, means rotatable with said knob spindle and engaging a part of said deadbolt for projecting and retracting said deadbolt relatively to sai-d casing and into and out of locking relation to said strike, a push or pull movement on said knob and spindle being adapted to swing said casing relatively to said strike to cam said latchbolt into or out of latching relation to said strike, a portion of said latchbolt being formed to contact lthefstrlke advance" of saidV deadbolt when said latchbolt and deadbolt Vare fully .projected from saidcasing 4and vsaid casing swings with a door from. an open `toward' a closed position, whereby said latchbolt impinges iirstagainst the strike, and means wherebyl the consequent retraction of saidlatchbolt by said strike retracts said Adea-d- -bolt into said casing. z

' f '1. In a lockof the class described, a casing, a latchbolt mounted-for sliding movement in said casing, aspring pressing said latchbolt outwardly yof said casing toward latching position, said latchbolt coacting yieldingly with a portion of a strike when., spring projected from said casing, said latchbolt being formed for -coaction with the strike so that transverse swinging of said latchbolt relatively to said strike as when said lock is on a swinging vdoor will cam said latchbolt out of latching position and into said casing against the force of said spring, a deadbolt slidably mounted in said casing and adapted to interlock with said strike when projected, a knob spindle rotatable in said casing, means rotatable with said knob spindle and engaging a part of said deadbolt for projecting and lretracting said deadbolt relatively to said casing and into and out of locking relation to said strike, a push or pull movement on said knob and spindle being adapted to swing said casing relatively to said strike to cam said latchbolt into or out of latching relation to said strike, a portion of said latchbolt being formed to contact the strike in advance of said deadbolt when said latchbolt and deadbolt are fully projected from said casing and said casing swings with a door from an open toward a closed position, whereby said latchbolt impinges rst against the strike, an-d a surface on said latchbolt impinging against a surface of said deadbolt for retracting said deadbolt into the casing as said latchbolt is retracted.

8. In a lock of the class described, a casing, a latchbolt mounted for sliding movement in said casing, a spring pressing said latchbolt outwardly of said casing toward latching position relatively t0 a strike, a deadbolt slidably mounted in said casing and adapted to interlock with said strike when projected, a portion of said latchbolt being formed to contact the strike in advance of said deadbolt when said latchbolt and -deadbolt are fully projected from said casing and said casing swings with a door from an open toward a closed position, whereby said latchbolt impinges first against the strike, and means whereby the consequent retraction of said latchbolt by said strike retracts said deadbolt into said casing,

9. In a lock of the class described, a casing, a latchbolt mounted for sliding movement in said casing, a spring pressing said latchbolt outwardly of said casing toward latching position relatively to a strike, a deadbolt slidably mounted in said casing and adapted to interlock with said strike when projected, a portion of said latchbolt being formed to contact the strike in advance of said deadbolt when said latchbolt and deadbolt are fully projected from said casing and said casing swings with a door from an open toward a closed position, whereby sai-d latchbolt impinges first against the strike, and a surface on said latchbolt impinging against a surface 0f said deadbolt for retracting said deadbolt into the casing as said latchbolt is retracted.

10. In a lock of the class described, a casing, a latchbolt movably mounted in said casing, a spring pressing said latchbolt relatively to said casing and toward latching position relatively to a strike, the contact of said latchbolt with said strikemoving said latchbolt into retradted `position so related to the strike whereby to Contact the i strike in advance of said deadbolt rwhen sadlatch bolt and deadboit are fully projected from said casing and said casing swings with a. door from an open toward a closed position, whereby said latchbolt impinges first against `thestrilre, and means whereby the consequent retractiony of said latchboltby said strike retracts said `deadbolt into Said casing.

CHARLES LEDIN.`

' REFENCEs CITED Y Thefoilowing references are of record` in the file of V.this patent:

lUNIT-313i STATES PATENTS Numberv 'Name Date 304,159 Biggs Aug. 26, 1834: 1,437,040 Butterworth Nov. 28, 1 922 10 1,486,552 Swanson Mar. 11, 1924 n FOREIGN PATENTS Number 'l I Country Datev 80,425 Sweden i May 15, 1935i 

